The unlike terms not having the same literal coefficients.

**For example:**

(i) 5ab, 5a, 5ac are unlike terms because they do not have identical variables.

(iii) 2x, 2y, 2m are unlike terms.

**Now look at the terms of the following polynomials:**

We observe that two terms of the binomial (11a

(ii) 7m

We observe that the three terms of the trinomial have same variables (m) raised to different
powers. So, the above trinomial is made up of three unlike or dissimilar terms.

We observe that the three terms of the trinomial (3x

(iv) 11m

We observe that the four terms of the polynomials (11m

Examples to identify unlike or dissimilar terms:

**Identify which pairs contain unlike terms in the following:**

(i) 5ab, 7ab

(ii) 3x, 4x(iii) m, n

(iv) 2m

(v) 6a

(vi) –xy, 7yx

**Solution:**

(i) 5ab, 7ab

The terms 5ab and 7ab have same literal factors (ab) so this pair is a like term.

The terms 3x and 4x

(iii) m, n

The terms m and n have different literal factors so this pair is an unlike term.

The terms 2m

(v) 6a

The terms 6a^2b and 11ab^2 have different literal factors so this pair is an unlike term.

(vi) –xy, 7yx

The terms –xy and 7yx have same literal factors (xy) so this pair is a like term.

**● ****Terms**

Adding and Subtracting Like Terms

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